Hamilton’s first Ferrari win in Barcelona closed the gap to 41 points behind Mercedes’ championship leader Kimi Antonelli.
Clark is bidding to become the first wire-to-wire US Open winner since Martin Kaymer in 2014.
The wing chose to risk a refracture in order to play in Saturday’s showpiece, which ended in a 26-17 defeat by Northampton.
Matt Henry took a starring role at the Oval, but Ben Stokes is poised to return for England.
‘I’ve been second twice and I want to turn the tables’.